1、BRITISH STANDARDBS EN ISO 1167-2:2006Incorporating corrigendum May 2008Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 2: Preparation of pipe test piecesICS 23.040.45; 23.040.20g49g50g3g38g50g51g60g44g49g42g3g58g44g
2、55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN ISO 1167-2:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 August 2
3、006 BSI 2008ISBN 978 0 580 62284 7National forewordThis British Standard is the UK implementation of EN ISO 1167-2:2006. It is identical with ISO 1167-2:2006. Together with BS EN ISO 1167-1:2006, it supersedes BS 2782-11:Method 1127P:1997 which is withdrawn. Together with BS EN ISO 1167-1:2006, BS E
4、N ISO 1167-3:2007 and BS EN ISO 1167-4:2007, it supersedes BS EN 921:1995 which is withdrawn.The UK participation in its preparation was entrusted by Technical Committee PRI/88, Plastic piping systems, to Subcommittee PRI/88/4, Test methods.A list of organizations represented on this subcommittee ca
5、n be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations.Amendments/corrigenda issued since pu
6、blicationDate Comments30 May 2008 Supersession details updated in national forewordEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 1167-2February 2006ICS 23.040.45; 23.040.20 Supersedes EN 921:1994 English VersionThermoplastics pipes, fittings and assemblies for theconveyance of fluids - Deter
7、mination of the resistance to internalpressure - Part 2: Preparation of pipe test pieces (ISO 1167-2:2006)Tubes, raccords et assemblages en matiresthermoplastiques pour le transport des fluides -Dtermination de la rsistance la pression interne - Partie2: Prparation des prouvettes tubulaires (ISO 116
8、7-2:2006)Rohre, Formstcke und Zubehr aus thermoplastischenKunststoffen fr den Transport von Flssigkeiten -Bestimmung der Widerstandsfhigkeit gegen innerenberdruck - Teil 2: Vorbereitung der Rohr-Probekrper(ISO 1167-2:2006)This European Standard was approved by CEN on 23 January 2006.CEN members are
9、bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the
10、Central Secretariat or to any CEN member.This European Standard exists in three official versions (English, French, German). A version in any other language made by translationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status a
11、s the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Sloven
12、ia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN nation
13、al Members.Ref. No. EN ISO 1167-2:2006: EForeword This document (EN ISO 1167-2:2006) has been prepared by Technical Committee ISO/TC 138 “Plastics pipes, fittings and valves for the transport of fluids“ in collaboration with Technical Committee CEN/TC 155 “Plastics piping systems and ducting systems
14、“, the secretariat of which is held by NEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August 2006, and conflicting national standards shall be withdrawn at the latest by August 2006. This do
15、cument supersedes EN 921:1994. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Icel
16、and, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Endorsement notice The text of ISO 1167-2:2006 has been approved by CEN as EN ISO 1167-2:2006 without any modifications. BS EN
17、 ISO 1167-2:2006iiiContents Page 1 Scope . 1 2 Normative references . 1 3 Principle. 1 4 Apparatus 2 5 Test pieces 2 5.1 Extruded test pieces. 2 5.2 Injection-moulded tubular test pieces 2 5.3 Measurement of dimensions . 2 6 Test report . 2 Bibliography . 4 BS EN ISO 1167-2:2006blank1Thermoplastics
18、pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 2: Preparation of pipe test pieces 1 Scope This part of ISO 1167 specifies the dimensions and method for preparation of extruded, or injection-moulded tubular, test pieces used to de
19、termine the resistance of thermoplastics pipes to internal hydrostatic pressure according to ISO 1167-1. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the
20、 latest edition of the referenced document (including any amendments) applies. ISO 1167-1:2006, Thermoplastics pipes, fittings and assemblies for the conveyance of fluids Determination of the resistance to internal pressure Part 1: General method ISO 3126, Plastics piping systems Plastics components
21、 Determination of dimensions 3 Principle Pipe test pieces may be obtained by extrusion or injection-moulding. The extruded test pieces are used for material and pipe testing, whereas the injection-moulded tubular test pieces are used for testing injection moulding materials only. The injection-mould
22、ed tubular test pieces make it possible to determine the time-related behaviour of the injection moulding material for fittings under hydrostatic pressure and under the same conditions as specified for extruded pipes. It is possible to extrapolate the results in accordance with a method such as that
23、 specified in ISO 9080 in order to determine the MRS (minimum required strength) and to classify the material using ISO 12162. The tubular test pieces also make it possible to verify individual points on previously established stress/time regression curves as a minimum material test requirement. NOT
24、E If the compound used for the injection-moulding of components can also be extruded, then its time-related behaviour can be investigated using either injection-moulded or extruded tubular test pieces. After conditioning, test pieces consisting of a portion of pipe sufficient to provide the required
25、 free length as a function of the diameter of the pipe are subjected to a specified internal hydrostatic pressure or stress for a specified period of time or until the test piece(s) fail(s), in accordance with ISO 1167-1. The number of test pieces, conditioning and details of the test report are giv
26、en in ISO 1167-1. BS EN ISO 1167-2:20062 4 Apparatus 4.1 End caps, as specified in the standard making reference to ISO 1167-1. 4.2 Means of measuring the wall thickness, conforming to ISO 3126. 4.3 Means of measuring the mean outside diameter of the pipe, conforming to ISO 3126, e.g. Pi-tape. 5 Tes
27、t pieces 5.1 Extruded test pieces 5.1.1 Free length The free length, l0, of the pipe between the end caps shall be at least three times the nominal outside diameter dn, with a minimum of 250 mm. If, for pipes with dngreater than 315 mm, the specified minimum free length cannot be achieved, a shorter
28、 free length may be chosen with a minimum of two times dn, unless otherwise specified in the referring standard or specification. 5.1.2 Total length For type B end caps (see ISO 1167-1:2006, 5.1), the total length of the test piece shall be such that movement of the test piece between the end caps i
29、s accommodated during the test, thus making allowance for thermal expansion. 5.2 Injection-moulded tubular test pieces Injection-moulded test pieces shall conform to the following requirements for the dimensions shown in Figure 1. The nominal outside diameter dnof the test pieces shall be between 25
30、 mm and 110 mm inclusive. The wall thickness will depend on the material concerned. The free length l0of the test pieces, excluding the ends, shall be 3dn, except for test pieces dnW 50 mm, for which the minimum free length shall be 140 mm. Injection-moulded test pieces with a longitudinal fusion li
31、ne and both ends open should preferably be used for comparative and investigative purposes only. The injection-moulding parameters can strongly influence the stresses in the injection-moulded test piece. 5.3 Measurement of dimensions If necessary for the calculation of the test pressure (see ISO 116
32、7-1:2006, 7.2), find and determine, in accordance with ISO 3126, the minimum wall thickness and the mean outside diameter of the free length of the test piece, using apparatus conforming to 4.2 and 4.3. These measurements shall be used for further calculations. The rounding up procedure of ISO 3126
33、shall not be applied. 6 Test report Record the information required in order to comply with ISO 1167-1:2006, Clause 11 and include the method of manufacture of the test piece, i.e. by extrusion or by injection moulding. BS EN ISO 1167-2:20063Figure 1 Injection-moulded test pieces BS EN ISO 1167-2:20
34、064 Bibliography 1 ISO 9080, Plastics piping and ducting systems Determination of the long-term hydrostatic strength of thermoplastics pipe materials in pipe form by extrapolation 2 ISO 12162, Thermoplastics materials for pipes and fittings for pressure applications Classification and designation Ov
35、erall service (design) coefficient BS EN ISO 1167-2:2006blankBSI Group Headquarters389 Chiswick High Road,London W4 4AL, UKTel +44 (0)20 8996 9001Fax +44 (0)20 8996 Standards Institute (BSI)BSI is the independent national body responsible for preparing British Standards. It presents the UK view on
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